Right, well I don't use any such software, and I haven't accidentally uninstalled anything (as I say, I haven't actually used either of these programs for some time).
I would agree that there is something afoot, but in the spirit of the detective you appear to be channelling, rather than twisting the facts to fit these theories, how about changing the theory to fit the facts? The facts are that I have not accidentally uninstalled them, have not used them in some time, yet now they are gone without my input. Any ideas (from anyone) on how that might happen rather than suggesting the problem I'm having is not as I describe?